Comments on: Headers Versus Content: The Highest-End Feature in Load Balancing http://lbdigest.com/2009/01/16/headers-versus-content-the-highest-end-feature-in-load-balancing/ Server Load Balancing Articles and News Fri, 17 Jun 2011 15:24:09 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Alex http://lbdigest.com/2009/01/16/headers-versus-content-the-highest-end-feature-in-load-balancing/comment-page-1/#comment-1042 Alex Wed, 21 Jan 2009 16:14:45 +0000 http://lbdigest.com/?p=250#comment-1042 Just to point out there's even higher-end manipulation available if required in ZXTM. From TrafficScript, you can pass application-layer data to and from a Java servlet to achieve effects at least as complex as (for example) embedding a water mark in an image file on-the-fly - possibly containing some user-specific data: http://knowledgehub.zeus.com/articles/2008/05/22/watermarking_images_with_java_extensions Just to point out there’s even higher-end manipulation available if required in ZXTM. From TrafficScript, you can pass application-layer data to and from a Java servlet to achieve effects at least as complex as (for example) embedding a water mark in an image file on-the-fly – possibly containing some user-specific data: http://knowledgehub.zeus.com/articles/2008/05/22/watermarking_images_with_java_extensions

]]> By: Martin http://lbdigest.com/2009/01/16/headers-versus-content-the-highest-end-feature-in-load-balancing/comment-page-1/#comment-1041 Martin Wed, 21 Jan 2009 09:15:36 +0000 http://lbdigest.com/?p=250#comment-1041 We spent quite some time evaluating F5, Nortel, Foundry and ZXTM (A10 wasn't available in EMEA at the time, it just changed with an office opening in the Netherlands). What sold us to ZXTM: -ease of use (compared to F5 and iRules) -price/performance, dedicated ASICs are of no use when using rules so using off the shelf servers is way cheaper -busiest content providers in my country use them and we now use rules to -switch from http to https -insert backend node in title for lan IPs (great for troubleshooting) -retry request returning errors due to failed nodes on working ones (before health checks disable them) -hide 404s or redirect them to the previous site (preserving old links) Needless to say, we couldn't live without rules :) We spent quite some time evaluating F5, Nortel, Foundry and ZXTM (A10 wasn’t available in EMEA at the time, it just changed with an office opening in the Netherlands). What sold us to ZXTM:
-ease of use (compared to F5 and iRules)
-price/performance, dedicated ASICs are of no use when using rules so using off the shelf servers is way cheaper
-busiest content providers in my country use them
and we now use rules to
-switch from http to https
-insert backend node in title for lan IPs (great for troubleshooting)
-retry request returning errors due to failed nodes on working ones (before health checks disable them)
-hide 404s or redirect them to the previous site (preserving old links)
Needless to say, we couldn’t live without rules :)

]]> By: NickB http://lbdigest.com/2009/01/16/headers-versus-content-the-highest-end-feature-in-load-balancing/comment-page-1/#comment-1040 NickB Tue, 20 Jan 2009 11:49:47 +0000 http://lbdigest.com/?p=250#comment-1040 I would suggest that this difference is what makes a simple load balancer a fully fledged ADC. To my mind it is wrong to lump the two sides of the family together. Having a scripting language capable of changing/manipulating the payload of the traffic, should be the entry point for calling yourself an ADC. I would suggest that this difference is what makes a simple load balancer a fully fledged ADC.

To my mind it is wrong to lump the two sides of the family together.

Having a scripting language capable of changing/manipulating the payload of the traffic, should be the entry point for calling yourself an ADC.

]]> By: Internets of Interest: 17th Jan | My Etherealmind http://lbdigest.com/2009/01/16/headers-versus-content-the-highest-end-feature-in-load-balancing/comment-page-1/#comment-1039 Internets of Interest: 17th Jan | My Etherealmind Sun, 18 Jan 2009 00:02:22 +0000 http://lbdigest.com/?p=250#comment-1039 [...] Load Balancing Digest » Blog Archive » Headers Versus Content: The Highest-End Feature i... - Excellent post on load balancing using HTTP Headers and Content, more importantly on the difference. Cheap load balancer only balance HTTP Headers or a limited function set. Expensive load balancers give the kitchen sink, deluxe model, with a range of plugs. And Taps. VN:F [1.0.9_379] Please rate this post :    Why ?Rating: 0.0/10 (0 votes cast)please wait... Share: [...] [...] Load Balancing Digest » Blog Archive » Headers Versus Content: The Highest-End Feature i… – Excellent post on load balancing using HTTP Headers and Content, more importantly on the difference. Cheap load balancer only balance HTTP Headers or a limited function set. Expensive load balancers give the kitchen sink, deluxe model, with a range of plugs. And Taps. VN:F [1.0.9_379] Please rate this post :    Why ?Rating: 0.0/10 (0 votes cast)please wait… Share: [...]

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